MAT™ was developed in the 1990s by exercise scientist Greg Roskopf to correct muscle imbalances that result from repetitive activities, injury, aging and faulty biomechanics – i.e., my flat feet. Roskopf found that stronger muscles can become chronically injured as they overcompensate to stabilize joints, while underused (and usually pain-free) muscles may not even respond to neural signals to contract.